There is actually quite a lot of clothing for those 2 figures.

Daz3D has loads of clothing for them

Poser Fashion has some dresses for Laura, but any of the other Mil Girl clothing can be used just scale to fit.

Canary3D has some too.

Finally, if you invest in something like Wardrobe Wizard, by PhilC and Kamilche, you can use any of the clothing in your library for them.

Here is a post I made on Wardrobe Wizard, which explains what it is and what it does and how it works.  Personally I can't see myself ever using Poser without Wardrobe Wizard ever again. I use it absolutely everytime I am inside Poser, and I am no longer restricted to what clothing I can use on my figures because Wardrobe Wizard supports all of the figures that I have, they can all share each others' wardrobes.

http://www.renderosity.com/mod/forumpro/showthread.php?message_id=3005407&ebot_calc_page#message_3005407

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi